From 43d45f9fae523e7231986be5435c7930e51c6c5a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Torkel=20=C3=96degaard?= <torkel@grafana.com>
Date: Sat, 28 Oct 2017 12:59:32 +0200
Subject: [PATCH] fix: graphite annotation tooltip included undefined, fixes
 #9707

---
 public/app/features/annotations/annotation_tooltip.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/public/app/features/annotations/annotation_tooltip.ts b/public/app/features/annotations/annotation_tooltip.ts
index c950d3edd55..4828eb671a6 100644
--- a/public/app/features/annotations/annotation_tooltip.ts
+++ b/public/app/features/annotations/annotation_tooltip.ts
@@ -39,7 +39,7 @@ export function annotationTooltipDirective($sanitize, dashboardSrv, contextSrv,
           text = text + '<br />' + event.text;
         }
       } else if (title) {
-        text = title + '<br />' + text;
+        text = title + '<br />' + (_.isString(text) ? text : '');
         title = '';
       }